John and I_________ friends for eight years.We first got to know each other at a Christmas party.But we________ each other a couple of times before that

A.had been； have met

B.have been； have met

C.had been； had met

D.have been； had met

答案及解析： D

解析：

for+时间段表示从过去某时延续至今的动作或状态，用现在完成时；

meet发生在got to know 这一过去动作之前，用过去完成时。